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Comparisons

Ahrefs vs SEMrush vs Moz — SEO Tool Comparison 2026

By Sarah Connors · 11 min read · 3+ tools tested Updated May 2026

Ahrefs, SEMrush, and Moz are the three most-compared SEO platforms. Each has genuine strengths. Choosing wrong means paying for data you don't use. We ran all three in a real agency environment for 3 months.

"Ahrefs for backlinks and content research, SEMrush for PPC + SEO combined, Moz for beginners."

🏆 Our Top 3 Picks

Ahrefs
SEO agencies and serious practitioners
Try Ahrefs →
SEMrush
All-round digital marketers
Try SEMrush Free →
Moz Pro
SEO beginners and mid-level practitioners
Try Moz Free →

All Tools Compared

Tool Pricing Rating Best For
Top Pick Ahrefs
From $129/mo ★★★★½ 4.7 SEO agencies and serious practitioners Try Ahrefs →
SEMrush
From $139.95/mo ★★★★½ 4.6 All-round digital marketers Try SEMrush Free →
Moz Pro
From $99/mo ★★★★★ 4.2 SEO beginners and mid-level practitioners Try Moz Free →
Ahrefs

Ahrefs

Top Pick
SEO · From $129/mo · ★★★★½ 4.7

Industry-leading SEO platform with the best backlink database. Covers keyword research, site audits, rank tracking, and competitor analysis.

✓ Pros

  • ✓ Best backlink database
  • ✓ Excellent keyword data
  • ✓ Site audit tool
  • ✓ Content Explorer

✗ Cons

  • ✗ No free trial
  • ✗ Expensive
  • ✗ Overwhelming for beginners

Stackmap Verdict

SEO agencies and serious practitioners. Industry-leading SEO platform with the best backlink database. Covers keyword research, site audits,.

Try Ahrefs → Free trial available · No credit card required
SEMrush

SEMrush

SEO · From $139.95/mo · ★★★★½ 4.6

All-in-one digital marketing platform covering SEO, PPC, content, social, and competitive research.

✓ Pros

  • ✓ Best for PPC research
  • ✓ Huge keyword database
  • ✓ Social media tools
  • ✓ Good competitor intel

✗ Cons

  • ✗ Expensive
  • ✗ UI can feel cluttered
  • ✗ Backlink data behind Ahrefs

Stackmap Verdict

All-round digital marketers. All-in-one digital marketing platform covering SEO, PPC, content, social, and competitive research..

Try SEMrush Free → Free trial available · No credit card required
Moz Pro

Moz Pro

SEO · From $99/mo · ★★★★★ 4.2

Established SEO platform with domain authority scoring, rank tracking, and on-page optimization tools.

✓ Pros

  • ✓ Best for beginners
  • ✓ Long free trial
  • ✓ Domain Authority metric
  • ✓ Good community

✗ Cons

  • ✗ Data not as fresh as Ahrefs
  • ✗ Backlink index smaller
  • ✗ Slower to innovate

Stackmap Verdict

SEO beginners and mid-level practitioners. Established SEO platform with domain authority scoring, rank tracking, and on-page optimization tool.

Try Moz Free → Free trial available · No credit card required

Frequently Asked Questions

Is Ahrefs or SEMrush better?
Ahrefs has the better backlink database. SEMrush has more tools — especially for PPC research and content marketing.
Is Moz still worth using?
Yes for beginners — Moz has the best onboarding and a 30-day free trial. For agencies, Ahrefs or SEMrush offer deeper data.
Which SEO tool has the most accurate keyword data?
All three use estimates, but Ahrefs and SEMrush are generally rated most accurate. Moz tends to show lower volume estimates.
Can I use Ahrefs and SEMrush together?
Many agencies do — Ahrefs for backlink and content research, SEMrush for PPC intelligence and competitor ads.
What is the cheapest SEO tool that still works?
Moz Pro at $99/month is the most affordable with a 30-day trial. Ubersuggest is even cheaper for basic keyword research.